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223081580 = 225311093301
BaseRepresentation
bin11010100101111…
…11010001101100
3120112202201101202
431102333101230
5424102102310
634045225032
75346106421
oct1522772154
9515681352
10223081580
11104a18547
1262862178
13372a9247
14218add48
15148b83a5
hexd4bf46c

223081580 has 48 divisors (see below), whose sum is σ = 488167680. Its totient is φ = 85536000.

The previous prime is 223081567. The next prime is 223081591. The reversal of 223081580 is 85180322.

It is a super-3 number, since 3×2230815803 (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65930 + ... + 69230.

It is an arithmetic number, because the mean of its divisors is an integer number (10170160).

Almost surely, 2223081580 is an apocalyptic number.

223081580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223081580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244083840).

223081580 is an abundant number, since it is smaller than the sum of its proper divisors (265086100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223081580 is a wasteful number, since it uses less digits than its factorization.

223081580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3448 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 223081580 is about 14935.9157737315. The cubic root of 223081580 is about 606.4866383395.

The spelling of 223081580 in words is "two hundred twenty-three million, eighty-one thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 109 124 155 218 310 436 545 620 1090 2180 3301 3379 6602 6758 13204 13516 16505 16895 33010 33790 66020 67580 102331 204662 359809 409324 511655 719618 1023310 1439236 1799045 2046620 3598090 7196180 11154079 22308158 44616316 55770395 111540790 223081580